<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8" />
		<title></title>
		<style type="text/css">
			* {
				margin: 0;
				padding: 0;
			}

			.box {
				width: 800px;
				height: 200px;
				background-color: #323232;
			}

			.box1 {
				width: 700px;
				height: 100px;
				margin-left: 100px;
			}

			.box2 {
				width: 100px;
				height: 100px;
				float: left;
				margin-top: 50px;
				background-color: #fefefe;
				text-align: center;
				line-height: 100px;
				/* transition: all 0.5s; */
			}

			.box2 p {
				font-size: 15px;
			}

			.box2:hover {
				background-color: orange;
				margin-top: 34px;
			}
			.box2:hover .bot {
				display: block;
			}
			.box1::before {
				margin-top: 50px;
				content: '';
				border: 50px solid #fefefe;
				float: left;
				border-left-color: #323232;
			}
			.box1::after {
				margin-top: 50px;
				content: '';
				border: 50px solid #fefefe;
				float: left;
				border-right-color: #323232;
			}
			.bot {
				width: 100%;
				height: 16px;
				display: none;
			}
			.bot::before {
				content: '';
				float: left;
				border: 8px solid #fefefe;
				border-top-color: #9b8651;
				border-right-color: #9b8651;
			}
			.bot::after {
				content: '';
				float: right;
				border: 8px solid #fefefe;
				border-top-color: #9b8651;
				border-left-color: #9b8651;
			}
		</style>
	</head>
	<body>
		<div class="box">
			<div class="box1">
				<div class="box2">
					<p>home</p>
					<div class="bot"></div>
				</div>
				<div class="box2">
					<p>about</p>
					<div class="bot"></div>
				</div>
				<div class="box2">
					<p>services</p>
					<div class="bot"></div>
				</div>
				<div class="box2">
					<p>contant</p>
					<div class="bot"></div>
				</div>
			</div>
		</div>
	</body>
</html>
